<% content_for :mid do %>
<div id="midnav_left"></div>
<div id="midnav_back">
</div>
<div id="midnav_right"></div>
<% end %>
<div class="vertical"><%=image_tag "/images/nil.gif",:id=>"alter",:alt=>"注意"%>
<h2>对不起，所要查看的资料不存在!</h2></div>